Double SCR Heat Sink Study

SCR Heat Sinks are often mounted sandwich style, between a pair of liquid SCR Heat Sinks. This arrangement provides the best thermal performance, and optimal cooling, of both pole face sides of the SCR device. Of course, lower operating temperatures extend electronic device life. SCR Heat Sink design and the method of manufacture also significantly influence cooling performance. Specifically, SCR Heat Sinks with the ability to evenly transfer heat load over the mating surface(s) will sustain a performance advantage. Evenly distributed cooling in SCR Heat Sink design reduces or eliminates ‘hot spots’ (which diminishes device life) on the SCR’s pole face.

Performance of SCR Heat Sinks ultimately depend upon the maintained core temperature of the SCR in operation. Following are thermal CFD model studies of typical liquid cooled SCR Heat Sinks, simulated in application. Average core temperature callouts and cooler colors in the images represent better thermal performance of example ‘double coolers’.

Oops...
Slider with alias dbl-cooler-study not found.

Study Details:

The purpose of this study is to simulate the thermal performance of known SCR Heat Sink designs by comparison under the exact same simulation environment and settings. Basics for the un-biased study are:

  • Performed with Solidworks Flow Simulation CFD (computational fluid dynamics).
  • Models: All designs CAD modeled as close as exacting possible to its actual size, shape, features and etc. All CAD models assume the same (copper) material properties. All models without nickel plating.
  • General Settings: 2.0 GPM starting at 20 degrees C, fully developed flow; 2000 watt SCR. Heat Radiation of Solids. (All other settings set equal).
  • Arrangement: SCR Heat Sinks coupled with “U” hose connector (we know this wouldn’t be typical piping in an assembly, but what’s important is that ALL studies are ‘piped’ in the same manner…with a short “U” hose). Fluid inlet in first SCR Heat Sink. Fluid outlet in second SCR Heat Sink.
  • It is understood simulation cannot possibly represent all real-life applications. Again, the profound importance here is that all performance study results have been generated with the exact same simulation model. Therefore it should not be taken that we are claiming a particular design specifically performs at specified temperature callout. Rather, the purpose is for accurate comparison.

 

Study Disclaimer:

It is understood simulation cannot possibly represent all real-life applications. Again, the profound importance here is that all performance study results have been generated with the exact same simulation model. Therefore it should not be taken that we are claiming a particular design specifically performs at specified temperature callout. Rather, the purpose is for accurate comparison.